CN108176575B - A kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism - Google Patents
A kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism Download PDFInfo
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- CN108176575B CN108176575B CN201810003434.5A CN201810003434A CN108176575B CN 108176575 B CN108176575 B CN 108176575B CN 201810003434 A CN201810003434 A CN 201810003434A CN 108176575 B CN108176575 B CN 108176575B
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- driving wheel
- bar
- torsional oscillation
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 8
- 230000010355 oscillation Effects 0.000 claims abstract description 38
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
- B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
- B06B1/162—Making use of masses with adjustable amount of eccentricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Transmission Devices (AREA)
Abstract
The present invention is a kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism, including torsional oscillation mechanism and FM amplitude modulation mechanism, servo motor drives driving wheel, the bar of driving wheel drive two sides, the other end of bar drives two driven wheel rotations, bar drives two toothed racks being connected on bar, and two toothed racks realize torsional oscillation by engaging band moving gear with gear respectively；FM amplitude modulation mechanism by adjusting rod driving wheel end and driven wheel end in slot with a distance from core wheel come adjusting amplitude, servo motor rotational speed regulation torsion frequency is controlled by servo-driver, to realize the adjusting respectively of torsional oscillation amplitude and frequency.
Description
Technical field
The present invention relates to a kind of Low Frequency Torsional Vibration devices, specifically a kind of to be related to the torsional oscillation of frequency and adjustable amplitude
Mechanism, especially a kind of rack-and-pinion Low Frequency Torsional Vibration device mutually compound with four-bar mechanism.
Background technique
In the drilling and reaming conventional procedure of the composite boards such as fiber, since its internal fibrous material is being processed
The defects of being easy to produce interlaminar delamination, tearing, fiber axis and plucking, galled spots in the process, when drilling, are especially serious, processing
Quality is difficult to ensure.Vibration drilling is a kind of novel drilling processing technology, by being superimposed controllable phase to drill bit or workpiece
To vibration, drilling process is made to become instantaneous, pulse Dynamic Cutting Process, to change the mechanism of common drilling, had different
Ordinary technological effect is that one kind of solution high quality holes, Small-deep Hole and difficult-to-machine material drilling processing problems is effective
Method.
Axial vibration or the torsional oscillation for applying certain frequency and amplitude to cutter or workpiece to be machined, advantageously reduce cutting
Power reduces viscous knife, crushing knife, reduces cutting heat, promotes processing progress, promoting cutter life can according to the frequency of superpositing vibration
To be divided into ultrasonic vibration secondary process and non-ultrasonic vibration secondary process.Twisting vibration is processed, is in the market usually in knife
Ultrasound torsion equipment is superimposed on handle, but this ultrasonic knife handle is designed, made, installation, safeguarding, cost is all very high.
The patent of application number CN2015100737370 discloses a kind of torsional oscillation generating device, which can make output shaft exist
It is vibrated on torsional direction, tears a group simplicity open, but have the defects that structure is complicated and stability is poor；Application No. is
The patent of CN2017200888286 discloses a kind of torsional oscillation loading device excited by eccentric motor, passes through two eccentric motors
The periodical tangential force of generation causes cyclic torque in the center point so that shaft is realized and applied to shaft by torsional excitation
The function of torsional excitation, but amplitude and torsional oscillation vibration rate can not separate regulations.
If torsional oscillation is superimposed upon on workpiece, equally can make to cut using mechanical frequency torsional oscillation platform device fixed workpiece
The defects of cutting power cyclically-varying, promote the processing of fibrous material, reducing its tearing, plucking, promotes processing effect, has simultaneously
Structure is simple, low in cost, and amplitude and frequency are easy the advantages of adjusting.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of machine mutually compound with parallelogram mechanism based on rack-and-pinion
Tool formula twisting vibration device may be implemented drilling with reaming procedure and be superimposed adjustable amplitude and low-frequency torsional oscillation to workpiece, ties
Structure is simple, can be adapted to vibration auxiliary drilling processing technology very well.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The present invention is a kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism, including torsional oscillation mechanism and
FM amplitude modulation mechanism, torsional oscillation mechanism includes that the torsional oscillation platform bracket being fixed on lathe is bolted, on torsional oscillation platform bracket
The inner ring of welding setting fixed frame, the outer ring of fixing bearing on fixed frame, an axis and bearing is interference fitted, torsional oscillation platform and tooth
Wheel is connected by key together with axis, and torsional oscillation platform is synchronous with the movement of gear, is engaged two in the two sides of gear and gear
Toothed rack, two toothed racks are slided in the first guide rail and the second guide rail respectively, and one end of two toothed racks is connected on bar, are adjusted
Frequency amplitude modulation mechanism includes the driving wheel driven by motor and retarder, the first slot and the second slot is arranged on driving wheel, in master
The two sides of driving wheel are placed equidistant with the first driven wheel and the second driven wheel, are also respectively set on the first driven wheel and the second driven wheel
There are third slot (20) and the 4th slot (21), driving wheel, the first driven wheel, the second driven wheel are separately fixed on equidistant axis, the
Third slot on one driven wheel is parallel with the first slot, and the 4th slot on the second driven wheel is parallel with the second slot, wherein bar
Both ends are hinged in the slot of the first driven wheel and the first slot of driving wheel by short axle and are fixed on the position away from center of circle same distance,
The both ends of another bar be hinged on by short axle in the slot and the second slot of driving wheel of the second driven wheel be fixed on it is identical away from the center of circle
The position of distance.
The beneficial effects of the present invention are: the mechanical twisting vibration device of the present invention, drives driving wheel by servo motor, it is main
Driving wheel drives the bar movement of two sides, and the other end of bar drives driven wheel rotation, and bar drives two toothed racks being connected on bar in guide rail
In slide up and down, since phase of two rod ends on driving wheel is separated by 180 °, two rack movements are equivalent reversed；Rack gear is respectively arranged
It ensure that the stability of movement in gear two sides, two rack gears realize torsional oscillation by engaging band moving gear with gear respectively；Pass through
For adjusting rod in the adjustable amplitude of the respective distances of driving wheel end and driven wheel end in slot away from core wheel, distance more large amplitude is bigger
(α=r/Rsin2πft, α is gear corner,r(from) driving wheel radius for based on,RFor gear radius,tFor the time,fBased on (from) it is dynamic
Take turns rotational frequency), servo motor rotational speed regulation torsional oscillation vibration rate is controlled by servo-driver, revolving speed more high-frequency is bigger, thus
The adjusting respectively for realizing torsional oscillation amplitude and frequency, with versatile, structure is simple, advantage low in cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of torsional oscillation mechanism of the present invention.
Fig. 2 is low frequency torsional oscillation platform schematic device of the present invention.
Fig. 3 is amplitude vibration frequency adjustable mechanism schematic diagram of the present invention.
Fig. 4 is amplitude vibration frequency adjustable mechanism schematic diagram of the present invention.
Wherein: 1- motor, the first driven wheel of -2-, 3- bar, 4- retarder, 5- driving wheel, the second driven wheel of 6-, 7- first
Guide rail, 8- fixing bolt, 9- torsional oscillation platform, 10- gear, the second guide rail of 11-, 12- rack gear, 13- fixed frame, 14- torsional oscillation platform branch
Frame, 15- axis, 16- bearing, the first slot of 18-, the second slot of 19-.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and is further retouched in detail
It states, the embodiment is only for explaining the present invention, does not constitute and limits to protection scope of the present invention.
As shown in Figs 1-4, the present invention is a kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism, packet
Torsional oscillation mechanism and FM amplitude modulation mechanism are included, the torsional oscillation mechanism includes that the torsional oscillation platform bracket being fixed on lathe is bolted
14, welding setting fixed frame 13, the outer ring of fixing bearing 16, an axis on the fixed frame 13 on the torsional oscillation platform bracket 14
15 are interference fitted with the bearing 16, and the torsional oscillation platform 9 and gear 10 and the axis 15 are connected by key together, the torsion
The platform 9 that shakes is synchronous with the movement of the gear 10, is engaged two toothed racks in the two sides of the gear 10 and the gear 10
12, that is to say, that rack gear 12 is engaged in 10 two sides of gear with gear, and two rack gears 12 are led in the first guide rail 7 and second respectively
It is slided in rail 11, one end of two rack gears 12 is connected on bar 3, and the FM amplitude modulation mechanism includes passing through motor 1
The driving wheel 5 driven with retarder 4, is arranged the first slot 18 and the second slot 19, in the driving wheel 5 on the driving wheel 5
Two sides are placed equidistant with the first driven wheel 2 and the second driven wheel 6, also set respectively on first driven wheel 2 and the second driven wheel 6
It is equipped with third slot 20 and the 4th slot 21, the driving wheel 5, the first driven wheel 2, the second driven wheel 6 are separately fixed at equidistant axis
On, the third slot 20 on first driven wheel 2 is parallel with first slot 18, the 4th slot 21 on second driven wheel 6
Parallel with second slot 19, first slot 18 and the second slot 19 are separated by 180 °, first driven wheel 2 and the second driven wheel
The angle of slot is 180 ° on 6, wherein the both ends of a bar by short axle be hinged on the slot of first driven wheel 2 with
The position away from center of circle same distance is fixed in first slot 18 of the driving wheel 5, the both ends of another bar 3 pass through short axle
It is hinged in the slot of second driven wheel 6 and the second slot 19 of the driving wheel 5 and is fixed on the position away from center of circle same distance,
That is, 3 both ends of bar are respectively hinged at driving wheel 5 and the first driven wheel 2, it is identical away from the center of circle in the slot on the second driven wheel 6
The position of distance, short axle are rotated in fixed position, and phase of two bars 3 on the driving wheel 5 is separated by 180 °, passes through adjusting
Bar 3 is at driving wheel end and driven wheel end away from the respective distances of core wheel in slotrAdjustable amplitude, by the rotation for adjusting motor
The adjusting to vibration frequency may be implemented in frequency, and driving wheel 5 drives the bar 3 of two sides to move, and the other end of bar drives driven wheel rotation, bar
Two toothed racks 12 being connected on bar are driven to slide up and down in the first guide rail 7, the second guide rail 11, since two rod ends are on driving wheel
Phase be separated by 180 °, two rack movements are equivalent reversed, and rack gear, which is arranged in gear two sides, ensure that the stability of movement, two
Rack gear realizes torsional oscillation by engaging band moving gear 10 with gear respectively, and fixing bolt 8 is for fixing workpiece to be added.
The detailed process of realization amplitude vibration frequency modulation section is illustrated below
αFor gear corner,βFor driving wheel or driven wheel corner, and it is positive clockwise, 0 ~ 2 π of range,hIt is rod end to driven
The vertical range of core wheel is taken turns,rFor rod end to driving wheel or the distance in the driven wheel center of circle,RFor gear radius,ωFor driving wheel or from
It driving wheel revolving speed and is positive, is negative counterclockwise clockwise,tFor the time,fFor driving wheel or driven wheel rotational frequency,AFor gear vibration
Amplitude,f c For gear vibration frequency,kFor retarder rotating ratio,nFor motor speed.
H=rsin β h=R α=rsin β
α=r/Rsin β β=ω π of t, ω=2 f
α=r/Rsin2πft
The equation of motion of gear can be obtained:
α=Asin2 π ft A=r/R, f
c
=f=2πkn/60
According to the equation of motion of gear, it is known that this is a kind of standard sine movement, the bar movement on the first driven wheel 2 in slot
Gear turns to just when to highest pointαMaximum, gear turns just when the bar on the first driven wheel 2 in slot moves to minimum point
It movesαAt minimum, the amplitude of gear is obtained by equationAWithrIt is directly proportional, by adjust rod end to driving wheel or the driven wheel center of circle away from
FromrSize amplitude may be implementedAThe adjusting of size；The vibration frequency of gear known to equationf c With the rotational frequency of driving wheelfIt is identical, adjust motor revolving speed may be implemented to vibration frequency adjusting.
Servo motor of the invention drives driving wheel, and driving wheel drives the bar of two sides, and the other end drive two of bar is driven
Wheel rotation, bar drive two toothed racks being connected on bar, and two rack gears realize torsional oscillation by engaging band moving gear with gear respectively；It adjusts
Frequency amplitude modulation mechanism by adjusting rod driving wheel end and driven wheel end in slot with a distance from core wheel come adjusting amplitude, pass through servo
Driver control servo motor rotational speed regulation torsion frequency, to realize the adjusting respectively of torsional oscillation amplitude and frequency.
Claims (1)
1. a kind of rack-and-pinion Low Frequency Torsional Vibration device mutually compound with four-bar mechanism, including torsional oscillation mechanism and FM amplitude modulation machine
Structure, it is characterised in that: the torsional oscillation mechanism includes that the torsional oscillation platform bracket (14) being fixed on lathe is bolted, described
Welding setting fixed frame (13), the outer ring of fixing bearing (16), an axis on the fixed frame (13) on torsional oscillation platform bracket (14)
(15) it is interference fitted with the inner ring of the bearing (16), torsional oscillation platform (9) and gear (10) are connected by key with the axis (15)
Together, the torsional oscillation platform (9) is synchronous with the movement of the gear (10), two sides and the gear in the gear (10)
(10) it is engaged two toothed racks (12), two rack gears (12) are sliding in the first guide rail (7) and the second guide rail (11) respectively
Dynamic, one end of two rack gears (12) is connected on bar (3), the FM amplitude modulation mechanism include by motor (1) and
The driving wheel (5) that retarder (4) drives, is arranged the first slot (18) and the second slot (19), in the master on the driving wheel (5)
The two sides of driving wheel (5) are placed equidistant with the first driven wheel (2) and the second driven wheel (6), first driven wheel (2) and second from
Also third slot (20) and the 4th slot (21), the driving wheel (5), the first driven wheel (2), second are respectively arranged on driving wheel (6)
Driven wheel (6) is separately fixed on equidistant axis, the third slot (20) on first driven wheel (2) and first slot (18)
In parallel, the 4th slot (21) on second driven wheel (6) is parallel with the second slot (19), wherein the both ends of a bar (3)
It is hinged in the slot of first driven wheel (2) and first slot (18) of the driving wheel (5) and is fixed on away from the center of circle by short axle
The position of same distance, the both ends of another bar (3) by short axle be hinged on the slot of second driven wheel (6) with it is described
The position away from center of circle same distance is fixed in the second slot (19) of driving wheel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003434.5A CN108176575B (en) | 2018-01-03 | 2018-01-03 | A kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003434.5A CN108176575B (en) | 2018-01-03 | 2018-01-03 | A kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism |
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| Publication Number | Publication Date |
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| CN108176575A CN108176575A (en) | 2018-06-19 |
| CN108176575B true CN108176575B (en) | 2019-08-16 |
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| CN201810003434.5A Active CN108176575B (en) | 2018-01-03 | 2018-01-03 | A kind of Low Frequency Torsional Vibration device that rack-and-pinion is mutually compound with four-bar mechanism |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786325A (en) * | 2018-06-26 | 2018-11-13 | 深圳市玖品空气净化科技有限公司 | A kind of off-gas cleaning equipment of good dedusting effect |
| CN109333652B (en) * | 2018-10-10 | 2020-09-29 | 南京工程学院 | Mechanical torsional vibration table based on double eccentric wheel modules |
| CN111531639B (en) * | 2020-05-25 | 2022-03-08 | 南京工程学院 | Gear rack torsion vibration table driven by eccentric wheel |
| CN113926682B (en) * | 2021-10-13 | 2022-09-23 | 袁晓恳 | High-strength extremely-low-frequency sound generator |
| CN114769236B (en) * | 2022-05-18 | 2024-05-28 | 山西省安装集团股份有限公司 | Building heating and ventilation pipeline scale removing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2134237Y (en) * | 1992-03-19 | 1993-05-26 | 洛阳震动机械厂 | Mechanical vibrating automatic amplitude modulator |
| CN201183043Y (en) * | 2008-04-24 | 2009-01-21 | 重庆交通科研设计院 | Universal stepless force adjusting frequency modulation vibrator |
| CN204799529U (en) * | 2015-07-17 | 2015-11-25 | 浙江工业大学 | Amplitude and tunable frequency's shaking table |
| CN206464212U (en) * | 2017-01-27 | 2017-09-05 | 重庆交通大学 | The vibrating device of adjustable frequency and amplitude |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7089823B2 (en) * | 2002-05-29 | 2006-08-15 | Caterpillar Paving Products Inc. | Vibratory mechanism controller |
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2018
- 2018-01-03 CN CN201810003434.5A patent/CN108176575B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2134237Y (en) * | 1992-03-19 | 1993-05-26 | 洛阳震动机械厂 | Mechanical vibrating automatic amplitude modulator |
| CN201183043Y (en) * | 2008-04-24 | 2009-01-21 | 重庆交通科研设计院 | Universal stepless force adjusting frequency modulation vibrator |
| CN204799529U (en) * | 2015-07-17 | 2015-11-25 | 浙江工业大学 | Amplitude and tunable frequency's shaking table |
| CN206464212U (en) * | 2017-01-27 | 2017-09-05 | 重庆交通大学 | The vibrating device of adjustable frequency and amplitude |
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| CN108176575A (en) | 2018-06-19 |
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Effective date of registration: 20231225 Address after: 214026 No. 158 Nanhu Middle Road, Xuelang Street, Binhu District, Wuxi City, Jiangsu Province Patentee after: Hoyuan Green Energy Co.,Ltd. Address before: 1 No. 211167 Jiangsu city of Nanjing province Jiangning Science Park Hongjing Road Patentee before: NANJING INSTITUTE OF TECHNOLOGY |